package com.lan.mock13.shengsai.tC;

import java.util.*;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		long n = sc.nextLong();
		int cnt = 0;
		for (long i = 2; i * i <= n; i++) {
			if (n % i == 0) {
				cnt++;
			}
			while (n % i == 0) {
				n /= i;
			}
		}
		if (n > 1) {
			cnt++;
		}
			
		System.out.println(cnt);
	}
}
